CN103051091A - Multi-filar bar conductors for electric machines - Google Patents

Multi-filar bar conductors for electric machines Download PDF

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Publication number
CN103051091A
CN103051091A CN2012103938433A CN201210393843A CN103051091A CN 103051091 A CN103051091 A CN 103051091A CN 2012103938433 A CN2012103938433 A CN 2012103938433A CN 201210393843 A CN201210393843 A CN 201210393843A CN 103051091 A CN103051091 A CN 103051091A
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CN
China
Prior art keywords
solid core
conductor
insulating barrier
tangential
thread
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Pending
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CN2012103938433A
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Chinese (zh)
Inventor
P.J.萨瓦贾恩
R.维亚斯
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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Publication of CN103051091A publication Critical patent/CN103051091A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Abstract

A multi-filar conductor for an electric machine includes a first solid core and a second solid core. The first and second solid cores directly contact each other along a bare interface. An insulation layer surrounds the first and second solid cores. However, the insulation layer does not pass through the bare interface, such that there is no insulation between the first solid core and the second solid core.

Description

The multi-thread strip conductor that is used for motor
Technical field
The present invention relates to stator or rotor strip conductor for motor.
Background technology
Stator is the fixed part of motor.Stator and rotor interact, and described rotor is the moving component of motor.Stator allows motor that mechanical energy is become electric energy (generator) and converts electric energy to mechanical energy (motor) with rotor.Depend on the state of a control motor can the generating or electric model think the operation.Some stators and rotor have permanent magnet and some have conductor or the winding that electromagnetic field is provided.
Summary of the invention
A kind of multi-thread conductor for motor is provided.Multi-thread conductor comprises the first solid core and the second solid core.The first and second solid core directly contact with each other along exposed interface.Insulating barrier surrounds the first and second solid core.But insulating barrier is without exposed interface, thus not insulation between the first solid core and the second solid core.
That carries out by reference to the accompanying drawings hereinafter can easily understand above-mentioned the features and advantages of the present invention and other feature and advantage to implementing in the detailed description that better model of the present invention makes.
Description of drawings
Fig. 1 is the diagrammatic cross-sectional plan view for the stator of motor and rotor;
Fig. 2 be as shown in Figure 1 rotor and the close up view of a stator part, shown the strip conductor that stacks along the radial channels of stator;
Fig. 3 A is one explanatory view in the strip conductor shown in Fig. 1 and 2;
Fig. 3 B is the explanatory view that can be used for another strip conductor of the stator shown in Fig. 1 and 2;
Fig. 3 C is the explanatory view that can be used for another strip conductor of the stator shown in Fig. 1 and 2;
Fig. 3 D is the explanatory view that can be used for another strip conductor of the stator shown in Fig. 1 and 2;
Fig. 3 E is the explanatory view that can be used for another strip conductor of the stator shown in Fig. 1 and 2, and has the filler that is arranged in the tangential hole;
Fig. 4 is the diagrammatic cross-sectional plan view of the part of another stator, has shown in the radial channels of stator stacking of different strip conductors that order changes;
Fig. 5 is the diagrammatic cross-sectional plan view of the part of another stator, has shown to overlay multi-thread strip conductor in the stator radial channels;
Fig. 6 A is one explanatory view in as shown in Figure 5 the multi-thread strip conductor, and described strip conductor is the semisplit conductor and also can be used for the stator shown in Fig. 1 and 2;
Fig. 6 B is the explanatory view of another multi-thread strip conductor, and it is partially to divide current conductor (offset-split conductor) and also can be used for Fig. 1 and 2 or stator shown in Figure 5;
Fig. 6 C is the explanatory view of another multi-thread strip conductor, and it is convexo-convex conductor (double-convex conductor) and also can be used for Fig. 1 and 2 or stator shown in Figure 5;
Fig. 6 D is the explanatory view of another multi-thread excellent conductor, and it is four minutes current conductors (quad-split conductor) and can be used for Fig. 1 and 2 or stator shown in Figure 5; With
Fig. 7 is the diagrammatic cross-sectional plan view of the part of another stator, has shown in the radial channels of stator stacking of different multi-thread strip conductors that order changes.
Embodiment
Referring to accompanying drawing, wherein in the situation that corresponding identical or similar parts of possible identical Reference numeral among a few width of cloth figure are two schematic diagrames of the part of motor 10 as depicted in figs. 1 and 2.Motor 10 shown in Fig. 1 and 2 is outside strip winding stators 12, and it cooperates with inner rotator 14 in the motor 10.
Fig. 1 has shown the transversal plane view of stator 12 and rotor 14.Fig. 2 shown as shown in Figure 1 rotor 14 and the close up view of stator 12 parts.Feature and the parts of Fig. 1 can be incorporated and be used for to feature shown in other figure and parts into, and parts can shown in any structure between mix and collocation.
Describe in detail although the present invention is directed to the automobile application, it will be understood by those skilled in the art that wider application of the present invention.Those skilled in the art will also be understood that such as " top ", " below ", " upwards, " downwards " etc. for the description accompanying drawing, and does not represent limitation of the scope of the invention, scope of the present invention limits by claims.
Motor 10 is around axis 16 rotation and can describe by cylindrical-coordinate system.Yet, can use other coordinate systems for motor 10, stator 12 or rotor 14.Rotor 14 rotates around axis 16 in stator 12.
Axis 16 is directly perpendicular to the view (turnover paper) of Fig. 1 and define axial direction, and it comprises along axis 16 and 16 any the moving or the position of paralleling to the axis.Motor 10 also defines from axis 16 outward extending radial coordinates, and the motion of axis 16 is left in radial direction 18 representatives.At last, motor 10 defines angular coordinate or tangential coordinates, and it is always perpendicular to radial direction 18 and describe the motion of tangential direction 20.Tangential direction 20 represents motor 10 in the rotation of run duration.
Stator 12 comprises a plurality of conductor conduits 22 that are formed in the stator core 24.Each conductor conduit 22 is arranged essentially parallel to radial direction 18.One or more conductors 30 are arranged in the conductor conduit 22.Stator 12 is shown as each conductor conduit 22 and has four conductors 30.Yet, can in the conductor conduit 22 conductor 30 extra or still less can be set.
Conductor 30 is in conductor conduit 22 radially 18 and the strip conductor that stacks along a line.They can be called winding jointly stator core 24 and conductor 30() be the critical piece of stator 12.
Referring now to Fig. 3 A,, and continue with reference to Fig. 1-2, it has shown the more detailed view of conductor 30, and described conductor is used in the stator 12 shown in Fig. 1 and 2, and can be used in the rotor with winding or in other stators.The radial direction 18 of the conductor 30 shown in Fig. 3 A is vertical and tangential direction 20 is levels.The positive vector of the positive vector of radial direction 18 and negative vector (up or down) and tangential direction 20 and negative vector (to the left or to the right) are not restrictive.
Conductor 30 comprises the solid core 32 that forms with electric conducting material (for example copper and copper alloy).Solid core 32 has basically the sagittal plane 34 vertical or corresponding with the radial direction 18 of motor 10, and the tangential face 36 vertical or corresponding with the tangential direction 20 of motor 10 basically.Solid core 32 defines along its peripheral rectangle envelope frame (envelope) 38.If solid core 32 is shaped as rectangle, then it fills up rectangle envelope frame 38 basically.
Conductor 30 comprises at least one the tangential recess 40 that is formed at least one tangential face 36.Tangential recess shown in Fig. 3 A is recessed grooving or the variant part that basically covers each tangential face 36.Although shown two tangential recess 40 on the conductor 30, other structure can only only have a tangential recess 40 on a tangential face 36.
Tangential recess 40 forms corresponding tangential hole 42 in rectangle envelope frame 38.Tangential hole 42 is present between rectangle envelope frame 38 and the solid core 32.Because tangential recess 40, the surface area of solid core 32 is greater than the surface area of rectangle envelope frame 38.Both show with two dimension in Fig. 3 A should to note solid core 32 and rectangle envelope frame 38, but its each girth is basically proportional to the surface area of 3D shape basically.
Conductor 30 also comprises the insulating barrier 44 that surrounds solid core 32.As used herein, insulating barrier 44 can be used for difference and limit each conductor 30, as with conductor conduit 22 in a plurality of conductors of arranging to stack form relative.Insulating barrier 44 can be the insulator that scribbles enamel paint or varnish, or insulating barrier 44 can be based on aramid fibre clad structure (such as but not limited to: Nomex, Kevlar or Krypton band).Should note insulating barrier 44 only schematically shown in Fig. 3 A, and the path of insulating barrier 44 (path) can be different with thickness.
In the time of in the conductor conduit 22 in being installed in stator 12, tangential hole 42 will form air pocket or air double team between stator core 24 and conductor 30.If insulating barrier 44 applies as varnish, as shown in Figure 3A, insulating barrier 44 will be followed periphery and the tangential recess 40 of solid core 32.Yet if insulating barrier 44 applies as fiber or band clad structure, insulating barrier 44 will mate the path of rectangle envelope frame 38 basically.
For the conductor 30 shown in Fig. 3 A, tangential recess 40 does not intersect with any sagittal plane 34.Therefore, sagittal plane 34 keeps basically consistent with rectangle envelope frame 38.And then the insulating barrier 44 on the sagittal plane 34 is basically consistent with rectangle envelope frame 38.
Than rectangular strip conductor (it will fill up rectangle envelope frame 38), owing to having changed electric current, electromagnetic field and the flux of motor 10 run durations, conductor 30 will reduce the eddy current effect of conductor 30 experience.And then the proximity effect (proximity effects) that proximity conductor 30 causes in same conductor conduit 22 or near the conductor conduit 22 reduces.The eddy current and the proximity effect that reduce between the conductor 30 can reduce the resistance that motor 10 run duration conductors 30 cause.Reduce the operational efficiency that resistance in the conductor 30 can improve motor 10.
Fig. 3 A has shown the shape of different strip conductors to 3E.Under the service conditions (speed, moment of torsion, electric current) of the variation of motor 10, all conductors all have some reduction copper loss that measure (for example conductor resistance).Feature and the parts shown in each Fig. 3 A-3E can be incorporated and be used for to feature shown in other figure and parts into, and parts can shown in any structure between mix and collocation.
Referring now to Fig. 3 B,, and continue with reference to figure 1-3A, it has shown the more detailed view of conductor 130, and described conductor is used in the stator 12 shown in Fig. 1 and 2, and can be used in the rotor with winding or in other stators.Although do not illustrate separately, radial direction 18 also is vertical and tangential direction 20 is levels.
Conductor 130 comprises solid core 132, and described solid core has basically the sagittal plane 134 vertical or corresponding with the radial direction 18 of motor 10, and has basically the tangential face 136 vertical or corresponding with the tangential direction 20 of motor 10.Solid core 132 defines along its peripheral rectangle envelope frame 138.If solid core 132 is shaped as rectangle, then it fills up rectangle envelope frame 138 basically.
Conductor 130 comprises and is formed on the tangential face 136 tangential recess 140 on each.Tangential recess 140 shown in Fig. 3 B also is recessed grooving.Yet these tangential recess 140 basically do not cover tangential face 136 and have the radius less than the tangential recess 40 shown in Fig. 3 A.
Tangential recess 140 forms corresponding tangential hole 142 in rectangle envelope frame 138.Because tangential recess 140, the surface area of solid core 132 is greater than the surface area of rectangle envelope frame 138.Conductor 130 also comprises the insulating barrier 144 that surrounds solid core 132.For the conductor 130 shown in Fig. 3 B, tangential recess 140 does not intersect with any sagittal plane 134.Therefore, the insulating barrier 144 on sagittal plane 134(and the sagittal plane 134) basically keep consistent with rectangle envelope frame 138.
Referring now to Fig. 3 C,, and continue with reference to figure 1-3B, it has shown the more detailed view of conductor 230, and described conductor is used in the stator 12 shown in Fig. 1 and 2, and can be used in the rotor with winding or in other stators.Although do not illustrate separately, radial direction 18 also is vertical and tangential direction 20 is levels.
Conductor 230 comprises solid core 232, and described solid core has basically the sagittal plane 234 vertical or corresponding with the radial direction 18 of motor 10, and has basically all the tangential face 236 vertical or corresponding with the tangential direction 20 of motor 10.Solid core 232 defines along its peripheral rectangle envelope frame 238.If solid core 232 is shaped as rectangle, then it fills up rectangle envelope frame 238 basically.
Conductor 230 comprises and is formed on tangential face 236 two tangential recess 240 on each, thereby tangentially direction 20 forms altogether four tangential recess 240.Tangential recess 240 shown in Fig. 3 C also is little recessed grooving, is similar to the tangential recess 140 shown in Fig. 3 B.
Tangential recess 240 forms corresponding tangential hole 242 in rectangle envelope frame 238.Because tangential recess 240, the surface area of solid core 232 is greater than the surface area of rectangle envelope frame 238.Conductor 230 also comprises the insulating barrier 244 that surrounds solid core 232.For conductor 230 shown in Fig. 3 C, tangential recess 240 does not intersect with any sagittal plane 234.Therefore, the insulating barrier 244 on sagittal plane 234(and the sagittal plane 234) basically keep consistent with rectangle envelope frame 238.
Referring now to Fig. 3 D,, and continue with reference to figure 1-3C, it has shown the more detailed view of conductor 330, and described conductor is used in the stator 12 shown in Fig. 1 and 2, and can be used in the rotor with winding or in other stators.Although do not illustrate separately, radial direction 18 also is vertical and tangential direction 20 is levels.
Conductor 330 comprises solid core 332, and described solid core has basically the sagittal plane 334 vertical or corresponding with the radial direction 18 of motor 10, and basically has the tangential face 336 vertical or corresponding with the tangential direction 20 of motor 10.Solid core 332 defines along its peripheral rectangle envelope frame 338.If solid core 332 is shaped as rectangle, then it fills up rectangle envelope frame 338 basically.
Conductor 330 comprises and is formed on tangential face 336 two tangential recess 340 on each, thereby tangentially direction 20 forms altogether four tangential recess 340.Tangential recess 340 shown in Fig. 3 D also is little recessed grooving.Yet tangential recess 340 extends to and intersects at sagittal plane 334.From the conductor 30 shown in Fig. 3 A-3C, 130 and 230 different, conductor 330 is symmetrical at its sagittal plane 334 and tangential face 336 basically.
Tangential recess 340 forms corresponding tangential hole 342 in rectangle envelope frame 338.Because tangential recess 340, the surface area of solid core 332 is greater than the surface area of rectangle envelope frame 338.Conductor 330 also comprises the insulating barrier 344 that surrounds solid core 332.The middle body of insulating barrier 344 keeps consistent with rectangle envelope frame 338 basically on sagittal plane 334 and the tangential face 336.
Referring now to Fig. 3 E,, and continue with reference to figure 1-3D, it has shown the more detailed view of conductor 430, and described conductor is used in the stator 12 shown in Fig. 1 and 2, and can be used in the rotor with winding or in other stators.Although do not illustrate separately, radial direction 18 also is vertical and tangential direction 20 is levels.
Conductor 430 comprises solid core 432, and described solid core has basically the sagittal plane 434 vertical or corresponding with the radial direction 18 of motor 10, and has basically the tangential face 436 vertical or corresponding with the tangential direction 20 of motor 10.Solid core 432 defines along its peripheral rectangle envelope frame 438.If solid core 432 is shaped as rectangle, then it fills up rectangle envelope frame 438 basically.
Conductor 430 comprises and is formed on the tangential face 436 tangential recess 440 on each.Tangential recess 440 shown in Fig. 3 B also is the recessed grooving that basically covers tangential face 436, is similar to the tangential recess 40 shown in Fig. 3 A.
Tangential recess 440 forms corresponding tangential hole 442 in rectangle envelope frame 438.Because tangential recess 440, solid core 432(and electric conducting material) surface area greater than the surface area of rectangle envelope frame 438.Yet, replacing the air double team in the tangential hole 442, packing material 446 is arranged in the tangential hole 442.
Conductor 430 also comprises the insulating barrier 444 that surrounds solid core 432.Insulating barrier 444 surround packing materials 446 and solid core 432 both.Therefore, insulating barrier 444 is basically consistent with rectangle envelope frame 438 on sagittal plane 434 and tangential face 436.
Referring now to Fig. 4,, and continue with reference to figure 1-3E, shown the detailed view of the part of stator 512, it is similar to the stator 12 shown in Fig. 1 and 2, and can be the part (not marking separately) of motor.Feature and the parts of Fig. 4 can be incorporated and be used for to feature shown in other figure and parts into, and parts can shown in any structure between mix and collocation.
The axis (not shown) limits by the center of stator 512 basically, and the rotor (not shown) rotates around same axis.Radial direction 518 stretches out from axis, and tangential direction 520 is perpendicular to radial direction 518.
Stator 512 comprises a plurality of conductor conduits 522 that are formed in the stator core 524.Each conductor conduit 522 along single radial direction 518 extend and tangentially direction 520 be identical.Each conductor conduit 522 has the first conductor 530 and the second conductor 531 that is arranged on wherein at least.
The first conductor 530 comprises the first solid core 532, and described solid core has basically the sagittal plane 534 vertical or corresponding with radial direction 518, and the tangential face 536 vertical or corresponding with the tangential direction 520 of motor basically.The first tangential recess 540 is formed on each tangential face 536 of the first solid core 532.
The second conductor 531 and the first conductor 530 are arranged on same conductor conduit 522, but radially 518 overlay above or below the first conductor 530.In other words, the first conductor 530 tangentially direction 520 be parallel to the second conductor 531 or aim at along same radial transmission line/axis.
The second conductor 531 comprises the second solid core 533, and described solid core has basically the sagittal plane 534 vertical or corresponding with radial direction 518, and the tangential face 536 vertical or corresponding with the tangential direction 520 of motor basically.The second tangential recess 541 is formed on each tangential face 536 of the second solid core 533.The first conductor 530 and the second conductor 531 can be insulated layer (not illustrating separately), and described insulating barrier is followed the periphery of the first conductor 530 and the second conductor 531 basically.
The first tangential recess 540 is basically not identical with the second tangential recess 541, thereby stator 512 comprises different conductor shapes in its conductor conduit 522.The conductor shape that alternately changes between the first conductor 530 as shown in Figure 4 and the second conductor 531 is not restrictive.Extra conductor shape (including but not limited to any shape shown in Fig. 3 A-3E) can be used in the same conductor conduit 522.And then the difference that the different conductor conduit 522 in the stator 512 can have a different conductor stacks the different order of form or conductor.
Referring now to Fig. 5,, and continues with reference to figure 1-4, shown the diagrammatic cross-sectional plan view of the part of another motor 610.The stator 612 of motor 610 and rotor 614 are aimed at about axis 616.Motor 610 defines from axis 616 outward extending radial direction 618 with perpendicular to the tangential direction 620 of radial direction 618.
Stator 612 is included in a plurality of conductor conduits 622 in the stator core 624.Conductor conduit 622 is aimed at radial direction 618.Conductor conduit 622 is provided at least one multi-thread (multi-filar) conductor 630 of motor 610 in each.Multi-thread conductor 630 is configured to received current and forms electromagnetic field.Be different from some conductors mentioned above, multi-thread conductor 630 usefulness form more than one conductive component.
Referring now to Fig. 6 A-D,, and continues with reference to figure 1-5, show not isostructure and the shape of multi-thread conductor, multi-thread conductor 630 as shown in Figure 5.Each can be used for any stator shown in this article multi-thread strip conductor or multi-thread conductor, comprises the stator 612 of Fig. 5 or the stator 12 shown in Fig. 1-2.
Fig. 6 A has shown the explanatory view of multi-thread conductor 630 as shown in Figure 5.Multi-thread conductor 630 comprises the first solid core 632 and the second solid core 633 that directly contacts the first solid core 632.The first solid core 632 and the second solid core 633 can form with electric conducting material routine copper and copper alloy.Contact area between the first solid core 632 and the second solid core 633 or interface are exposed interfaces 636, thereby copper product directly contacts with each other.Exposed interface 636 is zones that conductor contacts with conductor (being metal and metal in this case), between the material of centre, does not for example insulate or filler.
Multi-thread conductor 630 can be called as semisplit conductor (half-split conductor).The second solid core 633 radially 618 is aimed at above or below the first solid core 632 or is stacked.Therefore, the second solid core 633 and the first solid core 632 direction 620 symmetries tangentially.
Insulating barrier 644 surrounds the first and second solid core 632,633.Insulating barrier 644 can be used for difference and limit the border of each multi-thread conductor 630.Insulating barrier 644 is without exposed interface 636, and not insulation between the first solid core 632 and the second solid core 633.Insulating barrier 644 can be enamel or varnish.Yet, in order to prevent better between the first solid core 632 and the second solid core 633 migration of insulation, insulating barrier 644 can be based on the clad structure of aramid fibre or band (such as but not limited to Nomex, Kevlar or Krypton band).
As shown in Figure 6A, the first solid core 632 has the first radial thickness 638 and the second solid core 633 has the second radial thickness 639.Basically equate for multi-thread conductor 630, the first radial thicknesss 638 and the second radial thickness 639.Be assemblied in the same envelope frame that limits by insulating barrier 644 in rectangular strip conductor when comparing, each approximately is half of rectangular strip conductor size for the first radial thickness 638 and the second radial thickness 639.
Fig. 6 B has shown the explanatory view of another multi-thread conductor 730, and it is partially to divide current conductor (offset-split conductor) and also can be used for Fig. 1 and 2 or stator shown in Figure 5.Although do not illustrate separately, radial direction and tangential direction be identical with shown in Fig. 6 A basically.Multi-thread conductor 730 comprises the first solid core 732 and the second solid core 733 that directly contacts the first solid core 732.The first solid core 732 and the second solid core 733 can form with electric conducting material routine copper and copper alloy.Contact area between the first solid core 732 and the second solid core 733 or interface are exposed interfaces 736, thereby copper product directly contacts with each other.
The second solid core 733 is radially aimed at above or below the first solid core 732 or is stacked.Therefore, tangentially direction is symmetrical for the second solid core 733 and the first solid core 732.
Insulating barrier 744 surrounds the first and second solid core 732,733.Insulating barrier 744 can be used for difference and limit the border of each multi-thread conductor 730.Insulating barrier 744 is without exposed interface 736, and not insulation between the first solid core 732 and the second solid core 733.Insulating barrier 744 can be enamel or varnish.Yet in order to prevent better the migration of insulation between the first solid core 732 and the second solid core 733, insulating barrier 744 can be clad structure or the band of aromatic polyamides.
Shown in Fig. 6 B, the first solid core 732 has the first radial thickness 738 and the second solid core 733 has the second radial thickness 739.Basically do not equate for multi-thread conductor 730, the first radial thicknesss 738 and the second radial thickness 739, thereby exposed interface 736 radially is offset.
The relative size of the first radial thickness 738 and the second radial thickness 739 is not restrictive.In the embodiment shown in Fig. 6 B, the first radial thickness 738 is larger, thereby larger conductor core is further in the outside.Yet the second radial thickness 739 can be larger.
Fig. 6 C shows the explanatory view of another multi-thread conductor 830, convexo-convex conductor, and it also can be used for Fig. 1 and 2 or stator shown in Figure 5.Although do not illustrate separately, radial direction and tangential direction be identical with shown in Fig. 6 A basically.Multi-thread conductor 830 comprises the first solid core 832 and the second solid core 833 that directly contacts the first solid core 832.The first solid core 832 and the second solid core 833 can form with electric conducting material routine copper and copper alloy.Contact area between the first solid core 832 and the second solid core 833 or interface are exposed interfaces 836, thereby copper product directly contacts with each other.
The second solid core 833 is radially aimed at above or below the first solid core 832 or is stacked.Therefore, tangentially direction is symmetrical for the second solid core 833 and the first solid core 832.
Insulating barrier 844 surrounds the first and second solid core 832,833.Insulating barrier 844 can be used for difference and limit the border of each multi-thread conductor 830.Insulating barrier 844 is without exposed interface 836, and not insulation between the first solid core 832 and the second solid core 833.Insulating barrier 844 can be enamel or varnish.Yet in order to prevent better the migration of insulation between the first solid core 832 and the second solid core 833, insulating barrier 844 can be clad structure or the band of aromatic polyamides.
Shown in Fig. 6 C, the first solid core 832 has the first radial thickness 838 and the second solid core 833 has the second radial thickness 839.Basically equate for multi-thread conductor 830, the first radial thicknesss 838 and the second radial thickness 839, thereby exposed interface 836 is equality radially.
Multi-thread conductor 830, the first solid core 832 and the second solid core 833 are not rectangle basically.Instead, the first solid core 832 and the second solid core 833 have the profile of convex surface.The first solid core 832 and the second solid core 833 limit tangential hole 842 at the opposition side at exposed interface 836.Shown in Fig. 6 C, insulating barrier 844 overlapping tangential holes 842 and in multi-thread conductor 830, leave air pocket.
Fig. 6 D shows the explanatory view of another multi-thread conductor 930, four minutes current conductors (quad-split conductor), and it can be used for Fig. 1 and 2 or stator shown in Figure 5.Although do not illustrate separately, radial direction and tangential direction be identical with shown in Fig. 6 A basically.Multi-thread conductor 930 comprises the first solid core 932 and the second solid core 933 that directly contacts the first solid core 932 along exposed interface 936.Multi-thread conductor 930 also comprises the 3rd solid core 934 and the 4th solid core 935.The 3rd solid core 934 directly contacts the first solid core 932 with the 4th solid core 935 along extra exposed interface 937, and the 4th solid core 935 directly contacts the second solid core 933 along extra exposed interface 937.
The first solid core 932 and the second solid core 933 can form with electric conducting material routine copper and copper alloy.Therefore, copper product directly contacts with each other.
In the structure shown in Fig. 6 D, the first solid core 932 belows are radially aimed at or overlayed to the second solid core 933.The 3rd solid core 934 and the 4th solid core 935 tangentially contiguous the first solid core 932 of direction and the second solid core 933 stack.Therefore, radially the two is symmetrical to multi-thread conductor 930 with tangential direction.
Insulating barrier 944 surrounds the first and second solid core 932,933 and also surround the third and fourth solid core 934,935.Insulating barrier 944 can be used for difference and limit the border of each multi-thread conductor 930.Insulating barrier 944 is without exposed interface 936 or extra exposed interface 937.Do not insulating between the first solid core 932 and the second solid core 933 or between the 3rd solid core 934 and the 4th solid core 935.Insulating barrier 944 can be enamel or varnish.Yet, for the migration that better prevents from insulating enters exposed interface 936 or extra exposed interface 937, insulating barrier 944 can be clad structure or the band of application the first and second solid core 932, the 933 or third and fourth solid core 934,935 are placed on together after.
Shown in Fig. 6 D, the first solid core 932 and the 3rd solid core 934 have the first radial thickness 938, and the second solid core 933 and the 4th solid core 935 have the second radial thickness 939.The first radial thickness 938 and the second radial thickness 939 equate basically, thereby exposed interface 936 is equality radially.
Referring now to Fig. 7,, and continue with reference to figure 1-6D, shown the diagrammatic cross-sectional plan view of another stator 1012 parts, it can be used for motor (not illustrating separately).The stator 1012 of Fig. 7 has shown stacking that the order of (at least two) different multi-thread strip conductors changes, for example shown in Fig. 6 A-6D those.
Stator 1012 (and rotor, not shown) has the central axis (not shown).Stator 1012 defines from the outward extending radial direction 1018 of axis, and defines the tangential direction 1020 perpendicular to radial direction 1018.Stator 1012 comprises a plurality of conductor conduits 1022, and each radially 1018 aims at described conductor conduit.
The first multi-thread conductor 1030 is arranged among of a plurality of conductor conduits 1022.The second multi-thread conductor 1031 also is arranged in the same conductor conduit 1022.Radially 1018, the second multi-thread conductors 1031 are above or below the first multi-thread conductor 1030.Although shown object lesson, the first and second multi-thread conductors 1030,1031 can be that any multi-thread conductor shown in Fig. 6 A-6D (630,730,830,930) maybe can be any conductor shown in Fig. 3 A-3E (30,130,230,330,430).
In structure shown in Figure 7, the first multi-thread conductor 1030 comprises the first solid core 1032 and the second solid core 1033 that directly contacts the first solid core 1032 along the first exposed interface 1036.The first insulating barrier 1044 surrounds the first and second solid core 1032,1033.But the first insulating barrier 1044 is without the first exposed interface 1036, thus not insulation between the first solid core 1032 and the second solid core 1033.
In structure shown in Figure 7, the second multi-thread conductor 1031 comprises the 3rd solid core 1034 and the 4th solid core 1035 that directly contacts the 3rd solid core 1034 along the second exposed interface 1037.The second insulating barrier 1045 surrounds the third and fourth solid core 1034,1035.But the second insulating barrier 1045 is without the second exposed interface 1037, thus not insulation between the 3rd solid core 1034 and the 4th solid core 1035.
In stator 1012, the second multi-thread conductor 1031 is basically not identical with the first multi-thread conductor 1030.The first and second multi-thread conductors 1030,1031 can relative to each other stack with any order, and can make up with extra types of conductors.And then the first and second multi-thread conductors 1030,1031 needn't stack with accurate identical order in each conductor conduit 1022.
Detailed description in the accompanying drawing and demonstration are to support of the present invention and description, and scope of the present invention only limits by claim.But although carried out detailed description those skilled in the art and can learn that being used in the scope of appended claim implement many replacement design and implementations example of the present invention carrying out better model of the present invention.

Claims (7)

1. multi-thread conductor that is used for motor comprises:
The first solid core;
The second solid core directly contacts the first solid core along exposed interface; With
Insulating barrier surrounds the first and second solid core, and wherein insulating barrier is without exposed interface, thus not insulation between the first solid core and the second solid core.
2. multi-thread conductor as claimed in claim 1, wherein motor comprise axis, from the outward extending radial direction of axis with perpendicular to the tangential direction of radial direction, and
Wherein the second solid core is radially aimed at the first solid core, thereby tangentially direction is symmetrical for the second solid core and the first solid core.
3. multi-thread conductor as claimed in claim 2,
Wherein the first solid core has the first radial thickness, and
Wherein the second solid core has the second radial thickness that is substantially equal to the first radial thickness.
4. multi-thread conductor as claimed in claim 3,
The 3rd solid core directly contacts the first solid core along extra exposed interface; With
The 4th solid core directly contacts the second solid core along extra exposed interface,
Wherein insulating barrier encirclement the first, second, third and the 4th solid core, and insulating barrier is without exposed interface and extra exposed interface, thus not insulation between the first solid core, the second solid core, the 3rd solid core and the 4th solid core.
5. multi-thread conductor as claimed in claim 3,
Wherein the first solid core and the second solid core have the profile of convex surface,
Wherein the first solid core and the second solid core limit tangential hole at the opposition side at exposed interface, and
The overlapping tangential hole of insulating barrier wherein.
6. multi-thread conductor as claimed in claim 2,
Wherein the first solid core has the first radial thickness, and
Wherein the second solid core has second radial thickness different from the first radial thickness.
7. stator that is used for motor, described motor have axis, from the outward extending radial direction of axis with perpendicular to the tangential direction of radial direction, stator comprises:
A plurality of conductor conduits, wherein each conductor conduit is arranged essentially parallel to radial direction;
The first multi-thread conductor is arranged among of a plurality of conductor conduits, comprising:
The first solid core;
The second solid core directly contacts the first solid core along the first exposed interface,
The first insulating barrier surrounds the first and second solid core, and wherein the first insulating barrier is without the first exposed interface, thus not insulation between the first solid core and the second solid core;
The second multi-thread conductor and the first multi-thread conductor be arranged in the same conductor conduit and radially be positioned at the first multi-thread conductor above or below, it comprises:
The 3rd solid core;
The 4th solid core directly contacts the 3rd solid core along the second exposed interface,
The second insulating barrier surrounds the third and fourth solid core, and wherein the second insulating barrier is without the second exposed interface, thus not insulation between the 3rd solid core and the 4th solid core; And
Wherein the second multi-thread conductor is basically not identical with the first multi-thread conductor.
CN2012103938433A 2011-10-17 2012-10-17 Multi-filar bar conductors for electric machines Pending CN103051091A (en)

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US13/274,537 US20130093280A1 (en) 2011-10-17 2011-10-17 Multi-filar bar conductors for electric machines

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